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there's a common belief in the chemtrail

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community the contrail can't persist for

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more than a minute or so that if it does

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that means it's the chemtrail where does

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this idea come from if you look at the

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internet you see a lot of things like

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this showing a short trail or a long

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trail and saying the long trail is a

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chem trail and the short trail is a

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contrail now I'm not gonna tell you one

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way or the other because you've got no

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reason to trust me some random guy on

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the Internet so let's have a look at

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what books on the weather say about the

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subject of controversy since I'll start

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with the new books and go back to the

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older book so we can see if they're

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consistent this is the book on clouds

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from 2002 here's a picture of a contrail

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spreading out and it says here contrails

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can't evaporate rapidly or resist and

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grow into sheets of C reform players

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Peterson guide to the atmosphere

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this is 1981 there are some pictures of

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contrails and it says sometimes they are

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ephemeral and dissipate as quickly as

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they form other times they persist and

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grow wide enough to cover a substantial

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portion of the sky with a seat of

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cirrostratus one out of the world 1972

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more pictures of contrails once

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glaciated this yet it means frozen the

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trails may last for several hours and

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may be spread out by wind shear into

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almost horizontal sheets clouds and

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weather 1969 and here they sometimes

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disappear quickly but on other occasions

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they persist for a long time spread out

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and become a series of altocumulus type

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of clouds cloud study sinks in color

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1967 and here's a picture of a whole

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bunch of contrails and the cloud is

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then spread out by any wind shear which

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may purse it maybe

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present yet see the Claire freezes

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almost instantly and does not readily

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here's a picture of some contrails

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contrails

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sometimes the air is sufficiently dry

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for the eyes klatch we have a parade in

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ten minutes or so but often you may last

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for several hours while study a

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pictorial guide 1957 - just show you

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that the picture of some contrails

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spreading out it's more wind shear can

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draw out a contrail into an almost

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horizontal sheet of cloud sometimes

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several trails drawn out in this way

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cover most of the sky with Cirrus if the

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trails are very persistent they have it

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a range of books going back nearly 70

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years so some guy on the internet or all